java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-2989841 [2019-08-09 16:54:37,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-09 16:54:37,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-09 16:54:37,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-09 16:54:37,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-09 16:54:37,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-09 16:54:37,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-09 16:54:37,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-09 16:54:37,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-09 16:54:37,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-09 16:54:37,606 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-09 16:54:37,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-09 16:54:37,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-09 16:54:37,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-09 16:54:37,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-09 16:54:37,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-09 16:54:37,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-09 16:54:37,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-09 16:54:37,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-09 16:54:37,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-09 16:54:37,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-09 16:54:37,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-09 16:54:37,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-09 16:54:37,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-09 16:54:37,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-09 16:54:37,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-09 16:54:37,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-09 16:54:37,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-09 16:54:37,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-09 16:54:37,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-09 16:54:37,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-09 16:54:37,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-09 16:54:37,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-09 16:54:37,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-09 16:54:37,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-09 16:54:37,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-09 16:54:37,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-09 16:54:37,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-09 16:54:37,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-09 16:54:37,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-09 16:54:37,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-09 16:54:37,634 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-08-09 16:54:37,648 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-09 16:54:37,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-09 16:54:37,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-09 16:54:37,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-09 16:54:37,650 INFO L138 SettingsManager]: * Use SBE=true [2019-08-09 16:54:37,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-09 16:54:37,651 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-09 16:54:37,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-09 16:54:37,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-09 16:54:37,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-09 16:54:37,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-09 16:54:37,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-09 16:54:37,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-09 16:54:37,652 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-09 16:54:37,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-09 16:54:37,653 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-09 16:54:37,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-09 16:54:37,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-09 16:54:37,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-09 16:54:37,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-09 16:54:37,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-09 16:54:37,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-09 16:54:37,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-09 16:54:37,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-09 16:54:37,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-09 16:54:37,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-09 16:54:37,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-09 16:54:37,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-09 16:54:37,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-09 16:54:37,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-09 16:54:37,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-09 16:54:37,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-09 16:54:37,702 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-09 16:54:37,703 INFO L275 PluginConnector]: CDTParser initialized [2019-08-09 16:54:37,703 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2019-08-09 16:54:37,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd692539/77015ea41814421789c8bddcc2bdb3f2/FLAGa333f4fef [2019-08-09 16:54:38,601 INFO L306 CDTParser]: Found 1 translation units. [2019-08-09 16:54:38,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2019-08-09 16:54:38,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd692539/77015ea41814421789c8bddcc2bdb3f2/FLAGa333f4fef [2019-08-09 16:54:39,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abd692539/77015ea41814421789c8bddcc2bdb3f2 [2019-08-09 16:54:39,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-09 16:54:39,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-09 16:54:39,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-09 16:54:39,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-09 16:54:39,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-09 16:54:39,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.08 04:54:39" (1/1) ... [2019-08-09 16:54:39,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69485c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:39, skipping insertion in model container [2019-08-09 16:54:39,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.08 04:54:39" (1/1) ... [2019-08-09 16:54:39,128 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-09 16:54:39,317 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-09 16:54:40,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-09 16:54:40,823 INFO L188 MainTranslator]: Completed pre-run [2019-08-09 16:54:41,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-09 16:54:41,550 INFO L192 MainTranslator]: Completed translation [2019-08-09 16:54:41,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41 WrapperNode [2019-08-09 16:54:41,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-09 16:54:41,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-09 16:54:41,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-09 16:54:41,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-09 16:54:41,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... [2019-08-09 16:54:41,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-09 16:54:41,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-09 16:54:41,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-09 16:54:41,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-09 16:54:41,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.08 04:54:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-09 16:54:41,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-09 16:54:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-09 16:54:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-08-09 16:54:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-08-09 16:54:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-08-09 16:54:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-08-09 16:54:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-09 16:54:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-08-09 16:54:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-08-09 16:54:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-08-09 16:54:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-08-09 16:54:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-09 16:54:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-08-09 16:54:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-08-09 16:54:41,938 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-09 16:54:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-09 16:54:41,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-09 16:54:46,329 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-09 16:54:46,330 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-09 16:54:46,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.08 04:54:46 BoogieIcfgContainer [2019-08-09 16:54:46,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-09 16:54:46,333 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-09 16:54:46,333 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-09 16:54:46,333 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-09 16:54:46,334 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.08 04:54:46" (1/1) ... [2019-08-09 16:54:50,400 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-09 16:54:50,411 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-09 16:54:50,414 INFO L168 Benchmark]: Toolchain (without parser) took 11304.27 ms. Allocated memory was 140.5 MB in the beginning and 527.4 MB in the end (delta: 386.9 MB). Free memory was 72.8 MB in the beginning and 141.6 MB in the end (delta: -68.8 MB). Peak memory consumption was 421.0 MB. Max. memory is 7.1 GB. [2019-08-09 16:54:50,416 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-09 16:54:50,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2441.51 ms. Allocated memory was 140.5 MB in the beginning and 270.0 MB in the end (delta: 129.5 MB). Free memory was 72.4 MB in the beginning and 203.6 MB in the end (delta: -131.2 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. [2019-08-09 16:54:50,419 INFO L168 Benchmark]: Boogie Preprocessor took 305.02 ms. Allocated memory is still 270.0 MB. Free memory was 203.6 MB in the beginning and 173.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. [2019-08-09 16:54:50,422 INFO L168 Benchmark]: RCFGBuilder took 4475.88 ms. Allocated memory was 270.0 MB in the beginning and 364.4 MB in the end (delta: 94.4 MB). Free memory was 173.6 MB in the beginning and 65.5 MB in the end (delta: 108.1 MB). Peak memory consumption was 210.7 MB. Max. memory is 7.1 GB. [2019-08-09 16:54:50,424 INFO L168 Benchmark]: Symbolic Interpretation took 4077.78 ms. Allocated memory was 364.4 MB in the beginning and 527.4 MB in the end (delta: 163.1 MB). Free memory was 65.5 MB in the beginning and 141.6 MB in the end (delta: -76.1 MB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. [2019-08-09 16:54:50,440 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 4652]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Interpreter reached this location of interest. Location might be reachable. Predicate is 65072#(and (= ~a14~0 18) (= 1 ~a1~0) (= 1 ~a3~0) (= ~a28~0 17) (not (= 1 ~a7~0)) (= ~a25~0 1) (= ~a26~0 17) (= 16 ~a4~0)). Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 106.6 MB in the beginning and 106.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2441.51 ms. Allocated memory was 140.5 MB in the beginning and 270.0 MB in the end (delta: 129.5 MB). Free memory was 72.4 MB in the beginning and 203.6 MB in the end (delta: -131.2 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 305.02 ms. Allocated memory is still 270.0 MB. Free memory was 203.6 MB in the beginning and 173.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4475.88 ms. Allocated memory was 270.0 MB in the beginning and 364.4 MB in the end (delta: 94.4 MB). Free memory was 173.6 MB in the beginning and 65.5 MB in the end (delta: 108.1 MB). Peak memory consumption was 210.7 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 4077.78 ms. Allocated memory was 364.4 MB in the beginning and 527.4 MB in the end (delta: 163.1 MB). Free memory was 65.5 MB in the beginning and 141.6 MB in the end (delta: -76.1 MB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...